I'm on the floor here. I can't stop crying. I feel totally humiliated and let down.

He knows that at 27 I'm desperate to get pregnant.

He knows that becoming a mum is the only thing that matters to me. Yet he's been sleeping with another woman for the past year and she got there first.

He and I have been together for 10 years and he insists that he has no plans to leave me.

Instead he intends to split his time between her place and mine.

When I tell him how I feel, he says that it won't be all bad because it's all in the family.

Apparently I'll be included. I'll be able to help out with babysitting and nappy changing. The lucky little lad will end up with two great mums.

I can't believe how insensitive he's being.

He thinks that by telling me this is the 21st Century he can make the problem simply disappear.

He's suggested I make a friend of his lover so that we can work out how we'll split caring for him (washing, food, sex rota etc).

I daren't tell my friends and family any of this as they would probably string him up. The shame is killing me.

I feel sick all the time and can't bear him to touch me. Can you believe this guy?

JANE SAYS: Clearly your fella has decided that the best way to deal with this nightmare situation is to bluff it out.

He hasn't apologised to you once. On the contrary, he's trying to put a positive spin on the fact that his other lover is having his baby and is hoping that you will be swept along in the general excitement.

But you're feeling betrayed and hurt. Not only has he cheated on you, but he's made another woman pregnant and now expects you to be happy for them.

Rather than hanging his head in shame, he's pretending that you're all one, big happy family and that you have a role to play in bringing up another woman's baby.

It's quite clear that you need to tell him to forget it.

I understand that you've been together for a long time and that it's very hard to move on, but are you really prepared to share your man with another woman and child? Is this what you want for yourself? The good news is that you've still got time on your side.

You're only 27 and can meet someone new.

Tell him today that you want out. Suggest he dedicates himself 100% to his new family, because you're not prepared to join his harem.